The LVRD500 Series, a logical extension
to the ultrasonic sensor series,
is designed for applications
requiring non-contact liquid level
measurement, in which ultrasonic
level measurement is not
acceptable.

The LVRD500 Series radar
technology can be adjusted for
variables such as materials to be
measured, vessel configuration,
and system interface. These
sensors are ideal when vapor,
dust, or a foaming surface prevents
ultrasonic-wave measurements.

LVRD500 Series radar sensors
can detect the level under a layer
of light dust or airy foam, but if the
dust particle size increases, or if
the foam or dust gets thick, they
will no longer detect the liquid level.
Instead, the level of the dust or
foam will be measured. Internal
piping, deposits on the antenna,
multiple reflections, or reflections
from the wall can interfere with
the proper operation of the
radar sensor. Other sources of
interference are rat-holing and
bridging of solids, as well as angled
process material surfaces that can
reflect the radar beam away from
the receiver.

The sensors use improved
microwave-pulse technology to
track any target material from the
tip of the antenna to the bottom of
the tank. Their power, pulse widths,
and sensitivity depend on the
distance of the target from the
antenna and the dielectric constant
of the reflecting material.

LVRD500 sensors feature
"echo marker" signal processing,
making them among the most
technologically advanced pulse
radar systems on the market.

This technology provides reliable,
continuous pulse shapes unaffected
by environmental factors
such as temperature, vacuums,
methane, steam, pressure, carbon
dioxide, vapors, and condensation.
The antenna comes in
polypropylene or an optional
high-resistance PTFE that can help
protect against material buildup.
Simple mounting and push-button
calibration make for easy
installation. The sensor can be
threaded directly into a 2 NPT metal
or plastic flange. The tank must
have a metal bottom to stop the
microwave signal.